I am going back to Sears, and get the wrench with the part number in your post. I have the replacement part on hand, just need to take out the old one first.
Silverbear
Bring the part with you, and if you can, bring the upper bolt or a similar one to make sure it fits.
FJRBluesman
Well, I went back to Sears - twice. The first time I got the 8mm ratcheting wrench you mentioned in your post. You were right, it is much thinner than the GearWrench I got earlier. But, the gap between the CCT body and the bolt head was too tight, and when the wrench almost went on the bolt, the bottom of the wrench was resting against the bottom edge of the frame spar - no movement was possible. What ended up working like a charm for me though, is a long 1/4 in. wobble extension that I got as part of a kit from Harbor Freight, a 1.5 in long, 1/4 in. wobble extension from Sears, and an 8 mm socket. I pushed the socket (mounted onto the 1.5 in wobble extension) onto the long wobble after I passed that through the frame slot. In seconds I was able to loosen and unwind the lower bolt half way, then I just turned the bolt with my fingers (from top and bottom) until the bolt came out completely. Your instructions for removing the CCT through the bottom worked out great, and in no time I was able to reinstall the new CCT by reversing the steps. The double wobble contraption worked great for tightening the bolts also (top and bottom).
Thanks again for you post and all your suggestions!
Sincerely,
Silverbear